What happens when electrodes are placed adjacently in a bipolar system?

In a bipolar system, when electrodes are placed adjacently, the configuration allows for the creation of a lesion that can be wider while still maintaining a shallow depth. This is due to the way that current flows between the two closely positioned electrodes. The energy delivered to the tissue effectively disperses over a larger area, resulting in a wider lesion, but the proximity of the electrodes limits the depth of penetration. The thermal effect created in such a setup is balanced, preventing the formation of deep lesions while allowing for broader tissue impact.

This mechanics of bipolar electrode placement is crucial in ablation procedures as it provides the ability to selectively target tissue without risking excessive depth, which can occur in other configurations. The wider but shallow lesion formation is particularly beneficial in clinical applications where precision and controlled ablation are essential.